package me.zhengjie.utils;

/**
 * Created by rosedoria on 2018/5/10.
 */

import me.zhengjie.annotation.excel.ExcelVOAttribute;
import me.zhengjie.annotation.excel.ExcelVOCheckFormat;
import me.zhengjie.annotation.excel.ExcelVOImportAttribute;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.xssf.usermodel.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Pattern;

/*
 * ExcelUtil工具类实现功能:
 * 导出时传入list<T>,即可实现导出为一个excel,其中每个对象Ｔ为Excel中的一条记录.
 * 导入时读取excel,得到的结果是一个list<T>.T是自己定义的对象.
 * 需要导出的实体对象只需简单配置注解就能实现灵活导出,通过注解您可以方便实现下面功能:
 * 1.实体属性配置了注解就能导出到excel中,每个属性都对应一列.
 * 2.列名称可以通过注解配置.
 * 3.导出到哪一列可以通过注解配置.
 * 4.鼠标移动到该列时提示信息可以通过注解配置.
 * 5.用注解设置只能下拉选择不能随意填写功能.
 * 6.用注解设置是否只导出标题而不导出内容,这在导出内容作为模板以供用户填写时比较实用.
 * 本工具类以后可能还会加功能,请关注我的博客: http://blog.csdn.net/lk_blog
 */
public class ExcelUtil<T> {
    Class<T> clazz;

    public ExcelUtil(Class<T> clazz) {
        this.clazz = clazz;
    }

    private static FormulaEvaluator evaluator;

    private Logger logger = LoggerFactory.getLogger(ExcelUtil.class);

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param sheetName 工作表的名称
     * @param sheetSize 每个sheet中数据的行数,此数值必须小于65536
     * @param output    java输出流
     */
    public boolean exportExcel(List<T> list, String sheetName, int sheetSize, OutputStream output) {
        Field[] allFields = clazz.getDeclaredFields();   // 得到所有定义字段
        List<Field> fields = new ArrayList<Field>();
        // 得到所有field并存放到一个list中.
        for (Field field : allFields) {
            if (field.isAnnotationPresent(ExcelVOAttribute.class)) {
                fields.add(field);
            }
        }
        // 产生工作薄对象
        XSSFWorkbook workbook = new XSSFWorkbook();
        // excel 2003中每个sheet中最多有65536行,为避免产生错误所以加这个逻辑.
        if (sheetSize > 65536 || sheetSize < 1) {
            sheetSize = 65536;
        }
        // 取出一共有多少个sheet.
        double sheetNum = Math.ceil(list.size() / sheetSize);
        for (int index = 0; index <= sheetNum; index++) {
            XSSFSheet sheet = workbook.createSheet();// 产生工作表对象
            if (sheetNum == 0) {
                workbook.setSheetName(index, sheetName);
            } else {
                workbook.setSheetName(index, sheetName + index);// 设置工作表的名称.
            }
            XSSFRow row;
            XSSFCell cell;
            // 创建一行
            row = sheet.createRow(0);
            // 写入各个字段的列头名称
            for (int i = 0; i < fields.size(); i++) {
                Field field = fields.get(i);
                ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                int col = getExcelCol(attr.column()); // 获得列号
                cell = row.createCell(col); // 创建列
                cell.setCellType(HSSFCell.CELL_TYPE_STRING); // 设置列中写入内容为String类型
                String name = attr.name();
                cell.setCellValue(name); // 写入列名
                if (StringUtils.isNotEmpty(name) && name.contains("*")) {
                    XSSFCellStyle style = workbook.createCellStyle();
                    //设置背景颜色
                    style.setFillForegroundColor(HSSFColor.RED.index);
                    cell.setCellStyle(style);
                } else {
                    XSSFCellStyle style = workbook.createCellStyle();
                    //设置背景颜色
                    style.setFillForegroundColor(HSSFColor.YELLOW.index);
                    cell.setCellStyle(style);
                }
                // 如果设置了提示信息则鼠标放上去提示.
                if (!attr.prompt().trim().equals("")) {
                    setXSSFPrompt(sheet, "", attr.prompt(), 1, 100, col, col);// 这里默认设了2-101列提示.
                }
                // 如果设置了combo属性则本列只能选择不能输入
                if (attr.combo().length > 0) {
                    setXSSFValidation(sheet, attr.combo(), 1, 100, col, col);// 这里默认设了2-101列只能选择不能输入.
                }
            }
            int startNo = index * sheetSize;
            int endNo = Math.min(startNo + sheetSize, list.size());
            // 写入各条记录,每条记录对应excel表中的一行
            for (int i = startNo; i < endNo; i++) {
                row = sheet.createRow(i + 1 - startNo);
                T vo = (T) list.get(i); // 得到导出对象.
                for (int j = 0; j < fields.size(); j++) {
                    Field field = fields.get(j);// 获得field.
                    Class<?> type = field.getType();
                    field.setAccessible(true);// 设置实体类私有属性可访问
                    ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                    try {
                        // 根据ExcelVOAttribute中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
                        if (attr.isExport()) {
                            cell = row.createCell(getExcelCol(attr.column()));
                            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
                            // 如果数据存在就填入,不存在填入空格.
                            if (type == Date.class) {
                                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                                cell.setCellValue(field.get(vo) == null ? "" : simpleDateFormat.format(field.get(vo)).toString());
                            } else {
                                cell.setCellValue(field.get(vo) == null ? "" : String.valueOf(field.get(vo)));
                            }
                        }
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        try {
            output.flush();
            workbook.write(output);
            output.close();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("Output is closed ");
            return false;
        }
    }

    /**
     * 分组的List导出  map的key为sheetName
     *
     * @param map
     * @param sheetSize
     * @param output
     * @return
     */
    public boolean exportExcelByMap(Map<String, List<T>> map, int sheetSize, OutputStream output) {
        if (map.isEmpty()) {
            ArrayList<T> list = new ArrayList<>();
            return exportExcel(list, "sheet1", 65535, output);
        }
        List<String> sheetNames = new ArrayList<>(map.keySet());
        Field[] allFields = clazz.getDeclaredFields();   // 得到所有定义字段
        List<Field> fields = new ArrayList<Field>();
        // 得到所有field并存放到一个list中.
        for (Field field : allFields) {
            if (field.isAnnotationPresent(ExcelVOAttribute.class)) {
                fields.add(field);
            }
        }
        // 产生工作薄对象
        HSSFWorkbook workbook = new HSSFWorkbook();
        // excel 2003中每个sheet中最多有65536行,为避免产生错误所以加这个逻辑.
        if (sheetSize > 65536 || sheetSize < 1) {
            sheetSize = 65536;
        }
        // 取出一共有多少个sheet.
        for (int index = 0; index < sheetNames.size(); index++) {
            HSSFSheet sheet = workbook.createSheet();// 产生工作表对象
            workbook.setSheetName(index, sheetNames.get(index));// 设置工作表的名称.
            HSSFRow row;
            HSSFCell cell;
            // 创建一行
            row = sheet.createRow(0);
            // 写入各个字段的列头名称
            for (int i = 0; i < fields.size(); i++) {
                Field field = fields.get(i);
                ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                int col = getExcelCol(attr.column()); // 获得列号
                cell = row.createCell(col); // 创建列
                cell.setCellType(HSSFCell.CELL_TYPE_STRING); // 设置列中写入内容为String类型
                cell.setCellValue(attr.name()); // 写入列名
                // 如果设置了提示信息则鼠标放上去提示.
                if (!attr.prompt().trim().equals("")) {
                    setHSSFPrompt(sheet, "", attr.prompt(), 0, 100, col, col);// 这里默认设了2-101列提示.
                }
                // 如果设置了combo属性则本列只能选择不能输入
                if (attr.combo().length > 0) {
                    setHSSFValidation(sheet, attr.combo(), 1, 100, col, col);// 这里默认设了2-101列只能选择不能输入.
                }
            }
            int startNo = 0;
            List<T> list = map.get(sheetNames.get(index));
            int endNo = Math.min(startNo + sheetSize, list.size());
            // 写入各条记录,每条记录对应excel表中的一行
            for (int i = startNo; i < endNo; i++) {
                row = sheet.createRow(i + 1 - startNo);
                T vo = (T) list.get(i); // 得到导出对象.
                for (int j = 0; j < fields.size(); j++) {
                    Field field = fields.get(j);// 获得field.
                    Class<?> type = field.getType();
                    field.setAccessible(true);// 设置实体类私有属性可访问
                    ExcelVOAttribute attr = field.getAnnotation(ExcelVOAttribute.class);
                    try {
                        // 根据ExcelVOAttribute中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
                        if (attr.isExport()) {
                            cell = row.createCell(getExcelCol(attr.column()));
                            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
                            // 如果数据存在就填入,不存在填入空格.
                            if (type == Date.class) {
                                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                                cell.setCellValue(field.get(vo) == null ? "" : simpleDateFormat.format(field.get(vo)).toString());
                            } else {
                                cell.setCellValue(field.get(vo) == null ? "" : String.valueOf(field.get(vo)));
                            }
                        }
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        try {
            output.flush();
            workbook.write(output);
            output.close();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("Output is closed ");
            return false;
        }
    }

    /**
     * 对Excel源将其里面的数据导入到程序中
     *
     * @param input java输入流
     */
    public List<T> importExcelHSSF(InputStream input) {
        List<T> list = new ArrayList<T>();
        try {
            HSSFWorkbook workbook = new HSSFWorkbook(input);
            evaluator = workbook.getCreationHelper().createFormulaEvaluator();
            HSSFSheet sheet = workbook.getSheetAt(0); //默认指向第1个sheet.
            int rows = sheet.getPhysicalNumberOfRows();
            // 有数据时才处理
            if (rows > 1) {
                Field[] allFields = clazz.getDeclaredFields();// 得到类的所有field.
                Map<Integer, Field> fieldsMap = new HashMap<Integer, Field>();// 定义一个map用于存放列的序号和field.
                for (Field field : allFields) {
                    // 将有注解的field存放到map中.
                    if (field.isAnnotationPresent(ExcelVOImportAttribute.class)) {
                        ExcelVOImportAttribute attr = field.getAnnotation(ExcelVOImportAttribute.class);
                        int col = getExcelCol(attr.column());// 获得列号
                        // System.out.println(col + "====" + field.getName());
                        field.setAccessible(true);// 设置类的私有字段属性可访问.
                        fieldsMap.put(col, field);
                    }
                }
                outter:
                for (int i = 1; i < rows; i++) {// 从第2行开始取数据,默认第一行是表头.
//                    System.out.println("------------------------------------------------------------------");
                    HSSFRow row = sheet.getRow(i);
                    T entity = null;
                    inner:
                    for (int j = 0; j < fieldsMap.size(); j++) {
                        HSSFCell cell = null;
                        try {
                            cell = row.getCell(j);
                        } catch (NullPointerException e) {
                            continue;
                        }
                        if (cell == null) {
                            continue;
                        }
                        String c = getCellValueByCell(cell);
//                        System.out.println(c);
                        if (c.equals("")) {
                            continue;
                        }
                        entity = (entity == null ? clazz.newInstance() : entity);// 如果不存在实例则新建.
                        // System.out.println(cells[j].getContents());
                        Field field = fieldsMap.get(j);// 从map中得到对应列的field.
                        if (field == null) {
                            continue;
                        }
                        if (field.isAnnotationPresent(ExcelVOCheckFormat.class)) {
                            ExcelVOCheckFormat attr = field.getAnnotation(ExcelVOCheckFormat.class);
                            int length = attr.length();
                            if (c.length() > length) {
                                logger.info("======================第" + (i + 1) + "行第" + (j + 1) + "列表格内容" + c + "超出指定长度" + length + "=======================");
                                continue outter;
                            }
                            if (attr.isNumber() && !StringUtils.isNumeric(c)) {
                                logger.info("======================表格内容" + c + "非法，仅支持数字类型=======================");
                                continue outter;
                            }
                            if (attr.isPhone() && !checkMobile(c)) {
                                logger.info("======================表格内容" + c + "非法，请输入标准的11位手机号=======================");
                                continue outter;
                            }
                        }
                        if (cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {
                            short format = cell.getCellStyle().getDataFormat();
                            double value = cell.getNumericCellValue();
                            Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);
                            if (format == 22 && date != null){
                                field.set(entity, date);
                                continue;
                            }
                        }
                        // 取得类型,并根据对象类型设置值.
                        Class<?> fieldType = field.getType();
                        if (String.class == fieldType) {
                            field.set(entity, String.valueOf(c));
                        } else if ((Integer.TYPE == fieldType) || (Integer.class == fieldType)) {
                            field.set(entity, Integer.parseInt(c));
                        } else if ((Long.TYPE == fieldType) || (Long.class == fieldType)) {
                            field.set(entity, Long.valueOf(c));
                        } else if ((Float.TYPE == fieldType) || (Float.class == fieldType)) {
                            field.set(entity, Float.valueOf(c));
                        } else if ((Short.TYPE == fieldType) || (Short.class == fieldType)) {
                            field.set(entity, Short.valueOf(c));
                        } else if ((Double.TYPE == fieldType) || (Double.class == fieldType)) {
                            field.set(entity, Double.valueOf(c));
                        } else if (Character.TYPE == fieldType) {
                            if ((c != null) && (c.length() > 0)) {
                                field.set(entity, Character.valueOf(c.charAt(0)));
                            }
                        }
                    }
                    if (entity != null) {
                        list.add(entity);
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
        return list;
    }

    public List<T> importExcelXSSF(InputStream input) {
        List<T> list = new ArrayList<T>();
        try {
            XSSFWorkbook workbook = new XSSFWorkbook(input);
            evaluator = workbook.getCreationHelper().createFormulaEvaluator();
            XSSFSheet sheet = workbook.getSheetAt(0); //默认指向第1个sheet.
            int rows = sheet.getPhysicalNumberOfRows();
            // 有数据时才处理
            if (rows > 1) {
                Field[] allFields = clazz.getDeclaredFields();// 得到类的所有field.
                Map<Integer, Field> fieldsMap = new HashMap<Integer, Field>();// 定义一个map用于存放列的序号和field.
                for (Field field : allFields) {
                    // 将有注解的field存放到map中.
                    if (field.isAnnotationPresent(ExcelVOImportAttribute.class)) {
                        ExcelVOImportAttribute attr = field.getAnnotation(ExcelVOImportAttribute.class);
                        int col = getExcelCol(attr.column());// 获得列号
                        // System.out.println(col + "====" + field.getName());
                        field.setAccessible(true);// 设置类的私有字段属性可访问.
                        fieldsMap.put(col, field);
                    }
                }
                outter:
                for (int i = 1; i < rows; i++) {// 从第2行开始取数据,默认第一行是表头.
                    XSSFRow row = sheet.getRow(i);
                    T entity = null;
                    inner:
                    for (int j = 0; j < fieldsMap.size(); j++) {
                        XSSFCell cell = null;
                        try {
                            cell = row.getCell(j);
                        } catch (NullPointerException e) {
                            continue;
                        }
                        if (cell == null) {
                            continue;
                        }
                        String c = getCellValueByCell(cell);
                        if (c.equals("")) {
                            continue;
                        }
                        entity = (entity == null ? clazz.newInstance() : entity);// 如果不存在实例则新建.
                        // System.out.println(cells[j].getContents());
                        Field field = fieldsMap.get(j);// 从map中得到对应列的field.
                        if (field == null) {
                            continue;
                        }

                        if (field.isAnnotationPresent(ExcelVOCheckFormat.class)) {
                            ExcelVOCheckFormat attr = field.getAnnotation(ExcelVOCheckFormat.class);
                            int length = attr.length();
                            if (c.length() > length) {
                                logger.info("======================第" + (i + 1) + "行第" + (j + 1) + "列表格内容" + c + "超出指定长度" + length + "=======================");
                                continue outter;
                            }
                            if (attr.isNumber() && !StringUtils.isNumeric(c)) {
                                logger.info("======================表格内容" + c + "非法，仅支持数字类型=======================");
                                continue outter;
                            }
                            if (attr.isPhone() && !checkMobile(c)) {
                                logger.info("======================表格内容" + c + "非法，请输入标准的11位手机号=======================");
                                continue outter;
                            }
                        }
                        if (cell.getCellType() == XSSFCell.CELL_TYPE_NUMERIC) {
                            short format = cell.getCellStyle().getDataFormat();
                            double value = cell.getNumericCellValue();
                            Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);
                            if (format == 22 && date != null){
                                field.set(entity, date);
                                continue;
                            }
                        }

                        // 取得类型,并根据对象类型设置值.
                        Class<?> fieldType = field.getType();
                        if (String.class == fieldType) {
                            field.set(entity, String.valueOf(c));
                        } else if ((Integer.TYPE == fieldType) || (Integer.class == fieldType)) {
                            field.set(entity, Integer.parseInt(c));
                        } else if ((Long.TYPE == fieldType) || (Long.class == fieldType)) {
                            field.set(entity, Long.valueOf(c));
                        } else if ((Float.TYPE == fieldType) || (Float.class == fieldType)) {
                            field.set(entity, Float.valueOf(c));
                        } else if ((Short.TYPE == fieldType) || (Short.class == fieldType)) {
                            field.set(entity, Short.valueOf(c));
                        } else if ((Double.TYPE == fieldType) || (Double.class == fieldType)) {
                            field.set(entity, Double.valueOf(c));
                        } else if (Character.TYPE == fieldType) {
                            if ((c != null) && (c.length() > 0)) {
                                field.set(entity, Character.valueOf(c.charAt(0)));
                            }
                        }
                    }
                    if (entity != null) {
                        list.add(entity);
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
        return list;
    }

    private static String getCellValueByCell(Cell cell) {
        //判断是否为null或空串
        if (cell == null || cell.toString().trim().equals("")) {
            return "";
        }
        String cellValue = "";
        int cellType = cell.getCellType();
        if (cellType == Cell.CELL_TYPE_FORMULA) { //表达式类型
            cellType = evaluator.evaluate(cell).getCellType();
        }
        switch (cellType) {
            case Cell.CELL_TYPE_STRING: //字符串类型
                cellValue = cell.getStringCellValue().trim();
                cellValue = StringUtils.isEmpty(cellValue) ? "" : cellValue;
                break;
            case Cell.CELL_TYPE_BOOLEAN:  //布尔类型
                cellValue = String.valueOf(cell.getBooleanCellValue());
                break;
            case Cell.CELL_TYPE_NUMERIC: //数值类型
                if (HSSFDateUtil.isCellDateFormatted(cell)) {  //判断日期类型
                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
                    cellValue = sdf.format(cell.getDateCellValue());
                } else {  //否
                    cellValue = new DecimalFormat("#.######").format(cell.getNumericCellValue());
                }
                break;
            default: //其它类型，取空串吧
                cellValue = "";
                break;
        }
        return cellValue;
    }

    /**
     * 将EXCEL中A,B,C,D,E列映射成0,1,2,3
     *
     * @param col
     */
    public static int getExcelCol(String col) {
        col = col.toUpperCase();
        // 从-1开始计算,字母重1开始运算。这种总数下来算数正好相同。
        int count = -1;
        char[] cs = col.toCharArray();
        for (int i = 0; i < cs.length; i++) {
            count += (cs[i] - 64) * Math.pow(26, cs.length - 1 - i);
        }
        return count;
    }

    /**
     * 设置单元格上提示
     *
     * @param sheet         要设置的sheet.
     * @param promptTitle   标题
     * @param promptContent 内容
     * @param firstRow      开始行
     * @param endRow        结束行
     * @param firstCol      开始列
     * @param endCol        结束列
     * @return 设置好的sheet.
     */
    public static HSSFSheet setHSSFPrompt(HSSFSheet sheet, String promptTitle, String promptContent, int firstRow, int endRow, int firstCol, int endCol) {
        // 构造constraint对象
        DVConstraint constraint = DVConstraint.createCustomFormulaConstraint("DD1");
        // 四个参数分别是：起始行、终止行、起始列、终止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        // 数据有效性对象
        HSSFDataValidation data_validation_view = new HSSFDataValidation(regions, constraint);
        data_validation_view.createPromptBox(promptTitle, promptContent);
        sheet.addValidationData(data_validation_view);
        return sheet;
    }

    /**
     * 设置单元格上提示
     *
     * @param sheet         要设置的sheet.
     * @param promptTitle   标题
     * @param promptContent 内容
     * @param firstRow      开始行
     * @param endRow        结束行
     * @param firstCol      开始列
     * @param endCol        结束列
     * @return 设置好的sheet.
     */
    public static XSSFSheet setXSSFPrompt(XSSFSheet sheet, String promptTitle, String promptContent, int firstRow, int endRow, int firstCol, int endCol) {
        // 构造constraint对象
        DVConstraint constraint = DVConstraint.createCustomFormulaConstraint("DD1");
        // 四个参数分别是：起始行、终止行、起始列、终止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        // 数据有效性对象
        HSSFDataValidation data_validation_view = new HSSFDataValidation(regions, constraint);
        data_validation_view.createPromptBox(promptTitle, promptContent);
        sheet.addValidationData(data_validation_view);
        return sheet;
    }

    /**
     * 设置某些列的值只能输入预制的数据,显示下拉框.
     *
     * @param sheet    要设置的sheet.
     * @param textlist 下拉框显示的内容
     * @param firstRow 开始行
     * @param endRow   结束行
     * @param firstCol 开始列
     * @param endCol   结束列
     * @return 设置好的sheet.
     */
    public static HSSFSheet setHSSFValidation(HSSFSheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) {
        // 加载下拉列表内容
        DVConstraint constraint = DVConstraint.createExplicitListConstraint(textlist);
        // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        // 数据有效性对象
        HSSFDataValidation data_validation_list = new HSSFDataValidation(regions, constraint);
        sheet.addValidationData(data_validation_list);
        return sheet;
    }

    /**
     * 设置某些列的值只能输入预制的数据,显示下拉框.
     *
     * @param sheet    要设置的sheet.
     * @param textlist 下拉框显示的内容
     * @param firstRow 开始行
     * @param endRow   结束行
     * @param firstCol 开始列
     * @param endCol   结束列
     * @return 设置好的sheet.
     */
    public static XSSFSheet setXSSFValidation(XSSFSheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) {
        // 加载下拉列表内容
        DVConstraint constraint = DVConstraint.createExplicitListConstraint(textlist);
        // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        // 数据有效性对象
        HSSFDataValidation data_validation_list = new HSSFDataValidation(regions, constraint);
        sheet.addValidationData(data_validation_list);
        return sheet;
    }

    public static boolean checkMobile(String mobile) {
        String regex = "^1[3456789]\\d{9}$";
        return Pattern.matches(regex, mobile);
    }

}